Speak to Slaughterhouse Zoe at the Coliseum entrance to start the quest. She requests that you slay THREE enemies separately in order to win the special Garb. Take note that each battle will consume TEN minutes of time regardless of whether you Win or Lose.

BATTLE #1: GREMLIN

BATTLE #2: ANUBYS

BATTLE #3: ZALTYS. Remember that Zaltys falls quickly in the face of magic and is then vulnerable to sword strikes to the head.

Defeat all three enemies in separate battles and Zoe will reward you with the Midnight Mauve garb and completion of the quest.